操作符
+(_:)
返回給定的數字不變。
聲明
static func + (x: Self) -> Self
返回值
給定的參數沒有任何變化。
詳述
在使用一元減號運算符時,您可以使用一元加號運算符 (+
) 在代碼中為正數提供對稱性。
let x = -21
let y = +21
// x == -21
// y == 21
可用版本
iOS 8.0+, iPadOS 8.0+, macOS 10.10+, Mac Catalyst 13.0+, tvOS 9.0+, watchOS 2.0+
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注:本文由純淨天空篩選整理自apple.com大神的英文原創作品 AdditiveArithmetic +(_:)。非經特殊聲明,原始代碼版權歸原作者所有,本譯文未經允許或授權,請勿轉載或複製。